Method and system for plmn search on terminal device

A technology of terminal equipment and frequency, which is applied in wireless communication, access restriction, electrical components, etc., can solve the problems affecting user experience and taking a long time, so as to improve user experience and power consumption, compress time overhead, The effect of reducing the number of frequency points

Active Publication Date: 2019-09-27
MORNINGCORE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current terminal devices support more and more wireless access technologies, and each wireless access technology contains multiple frequency bands. ), which leads to a very long time for the terminal device to complete the PLMN search, which seriously affects the user experience

Method used

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  • Method and system for plmn search on terminal device
  • Method and system for plmn search on terminal device
  • Method and system for plmn search on terminal device

Examples

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Embodiment Construction

[0020] The embodiments of the present invention describe an improved PLMN search method and device, which can complete the PLMN search faster by reducing the number of frequency points that need to be searched in the full frequency band search.

[0021] Since a single PLMN corresponds to a certain operator in a certain country, and in practical applications, the allocation of wireless spectrum resources is to allocate continuous segments in each frequency band to the same operator, so frequency bands with the same PLMN Dots appear consecutively. Moreover, in order to ensure no mutual interference, the same spectrum resource will not be allocated to different operators. For example, Table 1 below shows the current allocation of wireless spectrum resources in mainland China. It is obvious that each operator obtains a certain segment of continuous spectrum resources in a certain frequency band under each access technology.

[0022]

[0023] Table 1 Division of Wireless Commun...

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Abstract

The invention relates to a method and system for carrying out PLMN (Public Land Mobile Network) search in a terminal device. The method comprises carrying out full-band search for various radio access technologies. The method comprises the steps of a, initializing a PLMN list of each band under a current radio access technology, wherein the PLMN list comprises identification numbers, frequency upper boundaries and frequency lower boundaries of one or more PLMNs in the band; b, obtaining to-be-searched frequency points under the current radio access technology; c, selecting unsearched frequency points and obtaining the bands in which the frequency points are located; d, judging whether the current frequency point is in the frequency range of the known PLMN, entering a step g if the current frequency point is in the frequency range of the known PLMN, otherwise entering a step e, wherein the frequency range is determined by the frequency upper boundary and the frequency lower boundary; e, carrying out search attempt, and reading the PLMN information when the search is successful; f, updating the PLMN list of the band corresponding to the current frequency point; and g, repeating the steps b-f until the to-be-searched frequency points under the current radio access technology are searched completely.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for performing PLMN search on terminal equipment. Background technique [0002] PLMN (Public Land Mobile Network, public land mobile network) provides land mobile communication services for the public, identified by a combination of MNC (Mobile Network Number) and MCC (Mobile Country Code), and guarantees its uniqueness worldwide . Different PLMNs belong to different operators, and multiple PLMNs may coexist in one area. For example, terminal devices such as mobile phones and tablet computers need to perform PLMN search in order to obtain mobile communication services normally, and select a suitable PLMN to reside on according to the PLMN list obtained through the search. [0003] In an existing PLMN search method for a terminal device, a full frequency band search method is usually used. Figure 1A Show the main process of PLMN search, refer to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/16
Inventor 刘洪波
Owner MORNINGCORE TECH CO LTD
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